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Manganese limits and guidelines in Ontario (CA-ON)

6 numeric limits and guidelines for manganese held for Ontario and the place above it, from 4 instruments, each cited to its instrument, edition, section or page and quoted text. The register was built from 273 instruments. Everything held for Ontario

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Ontario (CA-ON): 2 rows

ParameterValueUnitStatisticGovernsApplies whenCite
Manganese-54200.0Bq/Ldrinking water · limitdrinking water a drinking water system provides (Safe Drinking Water Act, 2002; s. 2: a person who immediately contacts the medical officer of health, and takes corrective action under O. Reg. 170/03 Schedules 17-18, is deemed not to contravene)
Radionuclide concentrations that exceed the standard may be tolerated for a short period, as long as the annual average concentrations remain below the standard and the restriction (see immediately below) for multiple radionuclides is met. Restriction for multiple radionuclides: Based on International Commission on Radiological Protection (ICRP) Publication 26, if two or more radionuclides are present, the sum of the quotients of the observed concentration in becquerels per litre divided by the respective standard in becquerels per litre for each of the radionuclides detected must be less than or equal to one.		Ontario Regulation 169/03, Ontario Drinking Water Quality Standards — Schedules 1-3
Schedule 3, Radiological Standards, Table 2 Artificial Radionuclides, item 28
28. Manganese-54 200.0
Manganese and Manganese Compounds0.4µg/m³daily averageambient air · limitaveraging period: 24 hour
at a point of impingement: the concentration the discharge results in, or would result in according to an approved dispersion model (s. 20 (1), (2)); s. 20 binds every facility's discharges on or after February 1, 2020 (s. 20 (3)(e))		Ontario Regulation 419/05, Air Pollution
Schedule 3, item 58.0.1
58.0.1 7439-96-5 Manganese and Manganese Compounds none 0.4 none

Canada (CA): 4 rows

ParameterValueUnitStatisticGovernsApplies whenCite
ManganeseBenchmark = exp(0.878[ln(hardness)] + 4.76) where the benchmark is expressed in dissolved manganese concentration (μg/L), and hardness is measured as CaCO3 equivalents in mg/L.µg/Lsurface water · guidelinereceiving water: freshwater
short-term exposure: CCME's short-term benchmark		CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
ManganeseVariableµg/Lsurface water · guidelinereceiving water: freshwater
long-term exposure: CCME's long-term guideline		CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
Manganese0.12mg/Ldrinking water · guidelinedrinking water (a guideline, not a regulation: each province and territory decides whether, and how, it binds there)Health Canada
Table 2, Chemical and Physical Parameters (Manganese, published or reaffirmed 2019)
I Manganese (2019) Water Talk - Manganese in drinking water 0.12 AO: ≤ 0.02
Manganese≤ 0.02mg/Ldrinking water · objectivedrinking water (a guideline, not a regulation: each province and territory decides whether, and how, it binds there)Health Canada
Table 2, Chemical and Physical Parameters (Manganese, published or reaffirmed 2019)
I Manganese (2019) Water Talk - Manganese in drinking water 0.12 AO: ≤ 0.02

Not held here: a discharge permit's own limits, and any rule for manganese outside the 17 instruments we hold for this place and the places above it. A row missing here is missing from our sources, not from the law.

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What was searched

Every instrument we hold for Ontario (CA-ON) and the place above it, Canada (CA): 17 instruments, for every parameter name matching “manganese”: manganese, manganese 54, manganese total.

  1. CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term · Canadian Council of Ministers of the Environment (CCME) · Summary Table (as served 2026-09-24; each guideline carries its own year) · source sha256 f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499 — 2 rows here
  2. Health Canada — Guidelines for Canadian Drinking Water Quality, Summary Tables 1-3 (microbiological, chemical and physical, radiological) · Health Canada, with the Federal-Provincial-Territorial Committee on Drinking Water · page modified 2026-01-21 (dcterms.modified; issued 2014-10-22): Tables 1-3 as the browser pane rendered them on 2026-10-15 · source sha256 9451ad8bfa566c0625ae4fcb362272cbb0e20040c548540f362488118c300b89 — 2 rows here
  3. Ontario Regulation 169/03, Ontario Drinking Water Quality Standards — Schedules 1-3 · Government of Ontario (Safe Drinking Water Act, 2002) · consolidation period January 1, 2020 - e-Laws currency date (October 12, 2026); last amendment O. Reg. 457/16 · source sha256 b622b94b73c161ff6e2a474712cda6344eadfff705b8a5d312d57ce51df419d0 — 1 row here
  4. Ontario Regulation 419/05, Air Pollution — Local Air Quality — Schedule 3, standards with variable averaging periods · Government of Ontario (Environmental Protection Act; Ministry of the Environment, Conservation and Parks) · consolidation period July 1, 2023 - e-Laws currency date; last amendment O. Reg. 90/22 (held snapshot of 2026-09-19, saved through the browser pane; e-Laws checked 2026-10-15: the same consolidation, currency date October 12, 2026) · source sha256 fb70ac7944efd8d2c48c508a8c045838d941dac28eb72b357b9a501b222ac17e — 1 row here
13 instruments searched with no row for it
  1. Canadian Ambient Air Quality Standards (CAAQS), environmental quality objectives under CEPA 1999 ss. 54(1) and 55(1): Objectives for Ambient PM2.5 and Ozone, Annex paras 1-4 and footnotes 1-2, Canada Gazette Part I, Vol. 147, No. 21, May 25, 2013 · Canada Gazette, Part I, Volume 147, Number 21: GOVERNMENT NOTICES May 25, 2013 · source — no row here
  2. CCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table, as served 2026-09-24) · Canadian Council of Ministers of the Environment (CCME) · Summary Table · source sha256 f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499 — no row here
  3. Fisheries Act (R.S.C. 1985, c. F-14), s. 36(3) — no deposit of a deleterious substance in water frequented by fish; no value printed · Government of Canada (Fisheries Act; Environment and Climate Change Canada administers s. 36) · Justice Laws Website, current to 2026-09-21, last amended 2024-11-27 · source sha256 db95b0a149728b0f0b1e1b1314d87ecdf46a91e1edfec4a7006fc3cbe0080bd6 — no row here
  4. Health Canada, Objective for Canadian drinking water quality — per- and polyfluoroalkyl substances (published 2024-08-09) · Health Canada · Objective value · source sha256 32a42a0d382cdd90729dd9750f47889782bd00d4af8dfd34f2b9aaf6f2678c6c — no row here
  5. Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 2c6e0151d3776378f73df4868ca98052882ee81faf9738bbeba6f5d544b648fe — no row here
  6. Meat and Poultry Products Plant Liquid Effluent Regulations (C.R.C., c. 818) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 c60e2a2dfa9a10c2ddd314b391bf66215ad599732f38b4c5a15fe793d8c28841 — no row here
  7. Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — ground water · Ontario Ministry of the Environment · April 15, 2011 · source sha256 4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b — no row here
  8. Ontario — Soil, Ground Water and Sediment Standards for Use Under Part XV.1 of the Environmental Protection Act (April 15, 2011), Tables 1-9 — soil · Ontario Ministry of the Environment · April 15, 2011 · source sha256 4062fa480e7483c42e6f5ea8d49a00ae1c0d0590002fa4989e58299786cf331b — no row here
  9. Provincial Water Quality Objectives (Ontario MOEE, Water Management: Policies, Guidelines, Provincial Water Quality Objectives, 1994) — Table 2, PWQOs and Interim PWQOs · Ontario Ministry of Environment and Energy (MOEE; now Ministry of the Environment, Conservation and Parks) · MOEE July 1994 (reprinted February 1999), as published on ontario.ca (fetched 2026-10-09) · source sha256 f4eddd3cd97cf5abb8678d040947bdaa2b4afae406f055948457d372d3b47931 — no row here
  10. Potato Processing Plant Liquid Effluent Regulations (C.R.C., c. 829) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 691ca3953a6dd6ae66b4c72737944caa68ed76710447df642a16716dd25027a3 — no row here
  11. Pulp and Paper Effluent Regulations (SOR/92-269) — s. 14 maximum BOD and suspended solids · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 cc8432e6a4dd1834ff4dd43d5b5fb98f09b1f7af7952e36154febcc649504eb4 — no row here
  12. Petroleum Refinery Liquid Effluent Regulations (C.R.C., c. 828) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 30e528bdc3a3546afb3defff4dae9b1dacb362e192680e127bd788d7f97c8ce8 — no row here
  13. Wastewater Systems Effluent Regulations (SOR/2012-139) — s. 6 effluent quality · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21, last amended 2026-06-04 · source sha256 0a60e10f783f7aca672792303dffcca1525133eb34eb32711543cb3cf4bbb955 — no row here

Read from public law and public agency files. A row missing here is missing from our sources, not from the law of the place. Check the cited source before relying on a value.